Liquid crystal composition and liquid crystal display element using same

A technology for liquid crystal display elements and liquid crystal compositions, which are applied in the directions of liquid crystal materials, chemical instruments and methods, optics, etc., to achieve the effect of wide liquid crystal temperature range, high practicability, and suppression of burn-in.

Pending Publication Date: 2021-05-28
DIC CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The problem to be solved by the present invention is to provide a liquid crystal composition and a liquid crystal display element using it, the liquid crystal composition exhibits a nematic phase in a wide temperature range, without making Δε, γ 1 , Low-temperature preservation, etc., when various characteristics of liquid crystal display elements deteriorate, in order to widen the temperature range that can be used, regarding high T ni and high Δn these two properties have achieved a balance

Method used

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  • Liquid crystal composition and liquid crystal display element using same
  • Liquid crystal composition and liquid crystal display element using same
  • Liquid crystal composition and liquid crystal display element using same

Examples

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Embodiment 1～9 and comparative example 1～4

[0235] As Examples and Comparative Examples, the following compositions were prepared. Each composition contains each compound described in a table, and each compound is contained in the mass % described in a table. These compositions are used to produce VA units and FFS units.

[0236] [Table 1]

[0237] Example number 1 2 3 4 5 6 3-Ph-Ph5-02 9 9 10 9 10 10 5-Ph-Ph5-02 7 20-Ph-Ph5-02 6 6 6 6 6 30-Ph-Ph5-02 10 10 10 10 10 10 2-Cy-Cy-10-Ph5-02 5 5 5 5 3-Cy-Cy-10-Ph5-01 3-Cy-Cy-10-Ph5-02 16 11 16 16 16 16 1V-Cy-Cy-10-Ph5-02 5 3-Cy-Ph5-02 7 7 5 3 6 6 3-Cy-Cy-Ph5-02 5 3-Cy-Ph-Ph-1 7 7 7 7 7 7 3-Cy-Ph-Ph-2 4 4 4 4 V-Cy-Ph-Ph-3 4 3-Cy-Cy-V 22 22 22 26 24 30 3-Cy-Cy-V1 4 4 4 4 4 3 3-Cy-Cy-2 3-Cy-Cy-Ph-1 10 10 10 8 8 5 3-Cy-Ph-Ph5-02 ...

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Abstract

The purpose of the present invention is to provide a liquid crystal composition which exhibits a nematic phase over a wide temperature range, and obtains the balance about the two characteristics of high Tni and high delta n without deteriorating various characteristics of a liquid crystal display element, such as [delta] [epsilon], [gamma] 1, and low-temperature storability and for widening a available temperature range. Provided are the liquid crystal composition containing a compound represented by general formula (i), a compound represented by general formula (ii), a compound represented by general formula (iii), and a compound represented by general formula (iv); and the liquid crystal display element using the liquid crystal composition.

Description

technical field [0001] The present invention relates to a liquid crystal composition having a negative dielectric constant anisotropy (Δε) useful as a liquid crystal display material, and a liquid crystal display element using the same. Background technique [0002] Liquid crystal display elements using liquid crystal compositions in which Δε exhibits a negative value are widely used in liquid crystal TVs and the like, and liquid crystal compositions used in these applications require high characteristics. For example, there is a higher upper limit temperature of the nematic phase (T ni ), higher refractive index anisotropy (Δn), larger Δε, lower rotational viscosity (γ 1 ), nematic phase stability at low temperature and other characteristics. especially about T ni , further improvement is required for higher temperature (Patent Document 1). [0003] prior art literature [0004] patent documents [0005] Patent Document 1: Japanese Patent Laid-Open No. 2008-024815 C...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K19/44G02F1/1333
CPCC09K19/44G02F1/1333
Inventor 樱井宗矩
Owner DIC CORP
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